Shartegodon, Velazco & Buczek & Novacek, 2017

Velazco, PaúL M., Buczek, Alexandra J. & Novacek, Michael J., 2017, Two new tritylodontids (Synapsida, Cynodontia, Mammaliamorpha) from the Upper Jurassic, southwestern Mongolia, American Museum Novitates 2017 (3874), pp. 1-36 : 5

Shartegodon , gen. nov.

Figures 3–10

TYPE SPECIES: Shartegodon altai , sp. nov .

ETYMOLOGY: Sharteg -, Mongolian, after the type locality.

AGE: As for the type and only species.

DIAGNOSIS: As for the type and only species.

Figures

FIGURE 3. The skull of Shartegodon altai PSS-MAE 633 (holotype) in (A) ventral and (B) dorsal views (above) with accompanying line drawings (opposite page). Dark gray indicates matrix; light gray indicates the upper postcanines. Abbreviations: CoP, coronoid process of dentary; GPF, greater palatine foramina; FO, fenestra

FIGURE 4. The skull of Shartegodon altai PSS-MAE 633 (holotype) in (A) left lateral and (B) right lateral views (top) with accompanying line drawings (bottom). Dark gray indicates matrix; light gray indicates the upper postcanines. Abbreviations: Bo, basioccipital; CoP, coronoid process of dentary; F, foramina; I1, first upper incisor partial root; I2, second upper incisor partial root; IF, infraorbital foramen; J, jugal; La, lacrimal; MF, masseteric fossa; Mx, maxilla; N, nasal; PC, upper postcanine teeth; Pmx, premaxilla; Zy, zygoma. Scale bar = 5 mm.

FIGURE 5. Isolated right region of the basicranium of Shartegodon altai PSS-MAE 633 (holotype). Scale bar = 5 mm.

FIGURE 6. Right partial ramus of Shartegodon altai PSS-MAE 633 (holotype) in (A) lateral and (B) medial views. Abbreviation: MG, meckelian groove. Scale bar = 5 mm.

FIGURE 7. Left partial ramus of Shartegodon altai PSS-MAE 633 (holotype) in (A) lateral and (B) medial views. Scale bar = 5 mm.

FIGURE 8. Upper postcanine dentition of Shartegodon altai PSS-MAE 633 (holotype) in occlusal views. The identity of the buccal, medial, and lingual cusps is labeled on the left PC2. Abbreviations:B, buccal; M, medial; L, lingual; PC, upper postcanine teeth.

FIGURE 9. Lower postcanine dentition of Shartegodon altai PSS-MAE 633 (holotype) in occlusal views. Abbreviations: b, buccal; l, lingual; pc, lower postcanine teeth.

FIGURE 10. Right lower postcanine teeth of Shartegodon altai PSS-MAE 633 (holotype) in lingual views, illustrating the shape of the roots.